urbas prediction and management of flash floods in urban areas … · title urbas vorhersage und...
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
URBASPrediction and management of flash
floods in urban areas
Thomas Einfalt, Klaus Friedeheim, Andreas Wagner
Project funded by the
Federal Ministry of Education and Research BMBF (Germany) as a part of
RIMAX „Risk management of extreme flood events“
Internet: http://www.urbanesturzfluten.deInternet: http://www.rimax.de
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Flash-Floods in Germany: a problem?
Recorded Flash Flood events with damages in urban areas
350 events in last 15 years
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Types of flash floods in urban areas< 500 km² catchment area and < 6 hours rainfall duration
Lowland Hills and mountainswater
+ earth + debris
= mudflow
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Challenges, objectives and „products“
New Database eventsImproved forecast toolsEstimation of damageMethods for hazard and risk analyses for municipalities, hazard and risk mapsAreas with high flash flood risk in GermanyGuidelines for measures
Climate change
Phenomena of flash floods
Feasable risk management strategies
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
15 representative cities
Interviews with all involved authorities
Ex post studies and simulations Case study
Case studies
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Case studies: Meteorological situation
measured precipitation vs. design rain
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Case studies: Damage assessment Disaster management
at micro scalerainfall intensity and fire brigade actions during a flash flood in Lohmarorganisation, operation ofservices, mitigation measures
river flooding
fire brigade assignment
high rainfall
low rainfall
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Case studies: Runoff and flooding
simulation of sewage/stormwater network, small urban creeks and surface flow by 2 D hydraulic model
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Improvement of forecast tools and systemsfor early warning
Radar Network (Nowcasting tool KONRAD) from theGerman Weather Service
Improvement of cell tracking methods
Improvement of detecting methods for flash flood events
More knowledge about environmental influences
Poster A.Wagner et al.: P 8.8
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Results: basis for hazard maps flash flood results and KOSTRA-intensities
Comparison of flash flood eventsto KOSTRA Good agreement of flash floodevents with high precipitation intensities (15 min durationand 20 years return period)
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Hazard and risk analyses in urban areas
Methods for hazardand risk analyses for small and big cities Best practice Prototypes of hazardand risk maps
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Actions and measures for risk reduction
Titelblatt Leitfaden Paderborn einfügen
e.g. emergency flood ways and retention
ponds
Risk reductiontown planningtechnical measuresinformation
Information
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Actions and measures disaster management
Damage reductionearly warning and alarmingdisaster managementdisaster control
Organisation
Warning by German Weather
Service
Simplified Decision matrix for warning
and alarming in Hamburg
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
Conclusions
Urban flash floods are a problem - even in GermanyThe approaches are generally transferable to other regionsRadar data significantly enhance the knowledge on small scale rainfield structuresStatistics of 15 years show uneven distribution of extreme eventsFirst results indicate
Possible improvements in warning systems (CONRAD, fire brigade)A required review of hydrologic design events in urban local climateEnhancements for the disaster management chainConsequences for good practice in urban planning
URBAS results help communities to prepare for climate change
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Funded by Supported by Partners Cooperation partners
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Federal Ministry of Education and Research (BMBF) Support Programme: Risk management of extreme flood events (RIMAX):
Prediction and management of flash floods in urban areas (URBAS)
More information on the web ...
http://www.urbanesturzfluten.dehttp://www.einfalt.dehttp://www.rimax.de
and thank you for patiently listening before lunch!